NGK Standard Series Spark Plug BM7A Compatible With PARTNER Chain Saw R-417T

NGK standard plugs are constructed for longer life and optimum performance. Thread Diameter 14mm. Thread Pitch 1.25mm. Seat Type Gasket. Reach 9.5mm (3/8"). Hex Size 3/4" (19mm). Terminal Type Removable Nut. Overall Height Bantam. Gap .028" (0.7mm)

Triple seals prevent leakage. Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. Copper core aids in heat removal. Corrugated ribs prevent flashover. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties. OEM Gap is 0.03